Conveyer excavator



Oct. 6, 1931. A. v. HUENNEKENS 19825956 CONVEYER EXCAVATOR Filed Dec.12, 1929 I2 sheets-sheet 2 1v1/ENT R. V @um vw,

A TTORNEY.

atented ct. 6, 1293i Y PATENT .OFFICE ALPHONSE V. HLUENNEKENS, EMILWAUKEE,.WISCONSIN i coNvEYEa Excnvn'ron.

Application led December 12, 1929. Serial No. 413,516.

rlhisinvention relates to improvements in conveyer excavators ordredges.

With vthe ordinaryexcavator, excavating is accomplished by a series ofalternate dig- '5 ging and dumping operations. The excavator is moved tobring the bucket into djgg position and as soon as the bucket' is ed itis raised and dumped and then lowered into digging position again.Obviously 1,0 this is a slow and inefficient procedure.

The present invention aims at the elimination of the above objection bythe provision sof. a conveyer vexcavator arranged with conveyersextending from the bucket to a point of if discharge whereby, in thecourse of an excavation, the bucket does not have to be moved fromdigging position, but may be moved slowly in a long arc through materialto be dug, and the loosened material is received I' 20 continuouslywithin the bucket and is continuously removed therefrom to a point ofdischarge by moving conveyers.

A further object of the invention is to provide a conveyer excavator inwhich the bucket may be angularly adjusted with respect to the bucketarm to adapt the bucket to different digging positions.

A further object of the invention is to provide a conveyer excavatorwhich is of very s@ simple construction, is easily operated andcontrolled, is strong and durable, and is well adapted for the purposesdescribed. With the above and other objects in view the inventionconsists of the improved conveyer excavator and its parts andcombinations as set forth in the claims, and all equivalents thereof.

` 1n theaccompanying'drawings in which 4e the same reference charactersindicate the saine parts in all of the views:

Fig. 1 is a side view of the improved conveyer excavator with partsbroken away and shown in section and taken on line 1-1 of Fig. 2;

Fig. 2 is a sectional view taken on line 2-2 of Fig.1;

Fig. 3 is a sectional view taken on line of Fig. 1 and on a larger`scale; and

Fig. 4 is a fragmentary side view. of the 50 bucket and bucket armshowing the angular adjustment between the two.

Referring now more particularly to the drawings it will appear that theconveyer excavator includes a cabin 8 enclosing a mo- 55 tive power 9which furnishes power for the movable parts and mechanisms of theexcavator. There are also Within the cabin Winches 10 andll for -thewinding and' un- L winding of cables 12 and 13, as well as control 6olevers 14. The cabin and machinery therein arepivotally mounted on acontinuous track laying type traction device 15 or other means l ofmobility.

Extendingangularly upwardly from the forward end portion of the cabin isa`pivota1. boom 16. Said boom is hollow and the inner end portion of anexcavating arm 17 is pivotally mounted on a pivot rod 18.within saidboom intermediate vits ends. The upper wall of the boom is provided withan opening 19 through which the curved inner ends. 20 of the sides 20 ofthe excavating arm extend, and said excavating arm also projectsforwardly downwardly through a relatively large opening 2l in the lowerwall ofthe boom. The openings 19 and 21 allow pivotal movements of theexcavating arm with re spect to theboom.

A cutting lip 22 is carried by the outer end 80 portion of saidexcavating arm and said cutting lip is of (three-sided form, including afront 23 and a pair of sides 24. The front of the cuttingA lip isprovided with projecting teeth 25. A shaft 26 extends through the 85forward end portions of the sides 20 of the excavating arm and alsothrough the sides .24 of the cutting lip, near the lower front cornerportions thereof, andthe cutting lip adapted to be pivotedv or tilted onsaid shaft 26. Each side 24 of the cutting lip, near its rear edge, isprovided with a series of spaced aperturesA 27 arranged 'in an arc andsaid apertures are adapted to register with similarly arranged apertures28 in the sides 2O of the excavating arm. Thus, various positions ofangular adjustment of the cutting lip with respect to the excavating armmay be attained, as shown in Fi 4, and the' cutting lip is retained inanyl a justed position by bolts 29 inserted through the registeringapertures 27 and 28. rlhe excavating arm 17 -is adapted to be pivotallymoved on the shaft 18 to raise or lower the cutting arm 22 with respectto the excavation by means of the cables 13 which extend over largepulleys 30 mounted on the outer end portion of the boom and are securedat their outer end rtions to eye-brackets 31 secured to the buc et.

In excavating, the continuous track laying or other mobility typetraction device is operated to move the entire conveyer excavator into aproper excavating position, and then the excavating arm is allowed todrop to its lowermost position, as shown in dotted lines in Fig. 1. Theexcavating arm and cutting lip are then moved upwardly in an arc intothe material to be excavated in a slow long stroke. The teeth 25 of thecutting lip will, of course, dig into and loosen thefmaterial and theloosened material will then fall on to the conveyer, striking anangularly disposed forward bale plate 32 and being defected thereby ontothe top surface of an endless conveyer 33.

The endless conveyer 33 is operatively mounted within the excavating arm17 extending lengthwise of the same and its width is equivalent to thedistance between the sides 20 of the excavating arm, with slightclearance. Secured transversely to the outer surface of the conveyer atsuitable intervals are metallic 'flights 34, while secured to oppositeside portions of the under-surface of the conveyer are endless chains 35extended at their opposite end portions about pairs of cog wheels 36 and37 mounted fast respectively on the shafts 18 and 26. The drive for theconve'er 33 includes a cog wheel 38.

mounted ast on an end portion of the shaft 18 connected by a chain drive39 with a cog wheel 40 mounted fast on an end portion of an inner shaft41. The other end portion of the shaft 41 carries another cog wheel 42engaged by a chain 43 which extendsto the operating mechanism of theconveyer excavator or any other source of motive wer.

From the foregoing it is evident that the conveyer 33 functions to carrymaterial deposited thereonto by the cutting lip and said material isconveyed from the cuttin lip inwardly rearwardly with respect to t eexcavating arm. The upper stretch of the conveyer 'bears the weight ofthe conveyed maof the conveyer.

terial and said, portion of the conve er is therefore movably supportedon space rollers 44 journaled between the side plates 20 of theexcavating arm. From the inner or rear end of the conveyer, within themedial portion of the boom 16, the material drops into an o n endedhopper 45 ,mounted through e boom inwardly of and below the inner endportion of the conveyer.

Below the hopper 45 and carried by supporting arms 46 extendingforwardly from the excavator traction device frame is atransverseconveyer 17 extending outwardly laterally of either side, orto the rear, or under the machine. The conveyer 47 is similar inconstruction to the conveyer 33 and rides in a pan having upwardlyprojecting trough-like sides 48 to retain material on the conveyer. Saidconveyer 47 is driven by a chain 49 or other drives extending to asourceof power (not shown) and driving a cog wheel 50 fast on an end portionof a shaft 51 By means of the conveyer 47, therefore, material deliveredthereonto through the hopper 45 from the conveyer 33 is moved laterallyoutwardly to the projecting outer end portion of the conveyer 47, at

which point the material may drop into wagons or trucks for furtherdisposal.

It will therefore be seen that by means of the improved conveyerexcavator, excavation work is made very simple and expeditious and thereare practically no lost motions. The excavator operates continuously,while moved, to dig, and the stroke or path is relatively large. In theordinary excavator each digging stroke of the bucket is short and thenthe filled bucket must be moved and dumped, Whereas in the presentmechanism the cutting lip digs continuously and material fallingthereinto is being constantly carried away and delivered at anappropriate point of discharge into vehicles or receptacles.Furthermore, it is simple, is easily operated and is well adapted forthe purposes described. y

What I claim as my invention is:

1. In a power excavator including a boom and a' hollowA arm pivotallycarried by the boom, an excavating member for dig g and shovelingperations angularly adJustably carried by e outer end portion of thearm, an endless conveyer movably mounted within the arm and theexcavating member and forming a movable bottom for the latter andextending longitudinally of the arm to its inner end portion, a hoppermounted through the boom ad'acent the inner end portion of the arm, an atransverse endless conveyer movably carried b the excavator below saidhopper and exten g laterally outwardly of the excavator for dischargingmaterial.

2. 'In a ower excavator including a boom and a ho ow arm pivotallycarried by the shoveling operations angularly adjustably carried by theouter end portion of the arm, an endless oonveyer movably mounted Withinthe arm and the excavating member and forming a movable bottom for thelatter and extending to the inner end portion of the arm, a hoppermounted through the boom adjacent the inner end portion of the arm, anda second endless conveyer movably carried by the excavator adjacent saidhopper and extending outwardly of the excavator for dischargingmaterial.

In testimony whereof, I aiix my signature.

ALPHONSE V. HUENNEKENS.

